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Description
Cisco 10GBASE-DWDM 1559.79 nm SFP+ (100-GHz ITU grid)The Cisco 10GBASE DWDM 1559. 79 nm SFP+ (100 GHz ITU grid) is a high performance optical transceiver engineered for demanding data networking and optical network applications. This 10 Gigabit capable SFP+ module leverages dense wavelength division multiplexing (DWDM) to maximize fiber capacity, reduce network footprint, and simplify scalable growth across data centers, campus backbones, and metro links. Built for Cisco environments, it delivers
The Cisco 10GBASE-DWDM 1559.79 nm SFP+ (100-GHz ITU grid) is a high-performance optical transceiver engineered for demanding data networking and optical network applications. This 10 Gigabit-capable SFP+ module leverages dense wavelength-division multiplexing (DWDM) to maximize fiber capacity, reduce network footprint, and simplify scalable growth across data centers, campus backbones, and metro links. Built for Cisco environments, it delivers reliable, low-latency connectivity that helps IT teams accelerate service delivery, optimize network utilization, and lower your total cost of ownership.
- 10GBASE-DWDM SFP+ transceiver enabling scalable 10 Gbps optical connectivity over DWDM networks, ideal for high-density data center and enterprise deployments.
- Wavelength specification of 1559.79 nm on the 100-GHz ITU grid, providing precise channel spacing for spectral efficiency and robust long-haul or metro reach.
- SFP+ form factor with a hot-swappable design for quick field upgrades and minimal downtime in crowded rack environments.
- Digital Diagnostics Monitoring (DDM/DOM) support for real-time monitoring of optical power, temperature, and other critical parameters to simplify maintenance and improve reliability.
- Designed for Cisco networks and compatible DWDM deployments, delivering Cisco-grade quality, rigorous testing, and dependable performance in demanding operating conditions.
Technical Details of Cisco 10GBASE-DWDM 1559.79 nm SFP+ (100-GHz ITU grid)
- Product type: 10GBASE-DWDM SFP+ transceiver
- Wavelength: 1559.79 nm
- ITU grid: 100 GHz
- Data rate: 10 Gbps
- Form factor: SFP+
- Interface: 10GBASE-DWDM optical transceiver
- Connector type: LC duplex
- Fiber type: Single-mode fiber (SMF) recommended for DWDM links
- Operating concept: Hot-swappable module designed for Cisco devices and standard DWDM networks
How to install Cisco 10GBASE-DWDM 1559.79 nm SFP+ (100-GHz ITU grid)
- Verify that the host device supports 10GBASE-DWDM SFP+ modules and that an SFP+ slot is available for insertion.
- Power down the device only if your hardware requires it; many Cisco platforms support hot-swapping of SFP+ modules, allowing installation with minimal interruption.
- Carefully orient the SFP+ module and insert it into the vacant SFP+ slot until it seats with a secure click.
- Connect the optical fiber using an LC duplex patch cord, ensuring proper polarity and alignment with the DWDM channel plan for your link.
- Power on (if applicable) and configure the network device to bring up the interface; verify the link status and perform basic throughput checks. Use the device’s diagnostics tools to monitor optical power and temperature if DOM/DDM is supported.
Frequently asked questions
-
Q: What is the Cisco 10GBASE-DWDM 1559.79 nm SFP+ (100-GHz ITU grid)?
A: It is a 10 Gbps DWDM SFP+ optical transceiver designed for Cisco networks, featuring a 1559.79 nm wavelength on the 100 GHz ITU grid to enable dense channel spacing and scalable DWDM deployments. -
Q: Is this module hot-swappable?
A: Yes. SFP+ modules are typically hot-swappable, allowing insertion or removal with minimal downtime in supported Cisco systems. -
Q: What type of fiber is required?
A: This DWDM SFP+ module is intended for single-mode fiber (SMF) with LC duplex connectors. Always match the fiber type and connector to your network design and DWDM equipment. -
Q: Can I use this module with third-party switches or routers?
A: While the module is designed for Cisco environments and Cisco devices, DWDM transceivers may have varying levels of interoperability with non-Cisco equipment. Check vendor compatibility matrices and test in a controlled environment before deployment. -
Q: Does it support Digital Diagnostics Monitoring (DDM/DOM)?
A: Many Cisco SFP+ DWDM modules include DOM/DDM support, providing real-time optical parameter readings to help with maintenance and performance optimization. -
Q: How do I determine the appropriate DWDM channel for this module?
A: The 1559.79 nm wavelength places this transceiver on a specific 100 GHz ITU grid channel. Your DWDM backbone should be designed to accommodate this channel spacing, with compatible multiplexers, demultiplexers, and optical amplifiers configured accordingly.
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4.7 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Great starter Field Watch. Rugged but simple and elegant.
Color: Black/Black/Brown, Color: Black/Black/Brown
I've been wanting to own a field watch for a while. I never got used to smart watches anyway, so I decided to go for a good brand that doesn't cost too much. I decided for this Time Expedition because it gas a good balance between rugged looks, simplicity and elegance. It's perfect for wearing every day, but also great for when you need to dress up as well.
If you are planning on getting this watch, be aware that the seconds are tracked on the small dial at the bottom. The large "seconds" hand it's meant for the chonograph feature, so it will sit static at the zero mark until you start the chonograph.
You also need to set it up out of the box. It's a simple process to set up the time, the date and reset the small dials in the zero position. The watch came without a manual, but there are plenty of videos on Youtube showing how to set up and use this exact model
The band is simple but elegant. It looks like nobuck but it's not really real leather. I can't say how durable it is yet or how long it will look over the time, but Timex is respectable enough so I expect this band to last several months. It can be replaced and there are lots of aftermarket options so I don't worry about this.
As other Expedition watches, it also comes with the Indiglo feature. You can activate night mode by pushing down the main button, then the entire face lights up. When using this feature, I noticed that the hands (being white) do not have a good contrast against the lit up face, but you get used to it. The hands themselves are bright under low-light conditions, so you don't really need the Indiglo feature unless you need to see other details from the watch
Anyway, I'm very happy with this purchase.
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Reviewed in the United States on May 13, 2026
★★★★★ 3
Did not arrive in original packaging, though I do like the watch.
Color: Black/Black/Brown
The watch is great, I love it. I've had it for a week now and it's comfortable, functional, and stylish. However, I'm giving it only 3 stars because of how I received it. It was delivered in a ziplock sleeve with the warranty sheet stuffed in a bubble wrap package. I bought what was described as a new product, but it did not come in the original package, nor owners manual. I had to find the manual from the manufacturer's website in order to set the dang thing!! It begs the question... Did I really receive a genuine Timex timepiece? Either way, so far I'm happy with the product with the exception that the second hand on the stop watch sits about half a click left of noon. I have not yet tested the water resistance, which I'm a little apprehensive about since there seemed to be some sort of light colored lubricant or seal around the crown. I'll have to try it before my time frame for returns has passed. All in all, I would buy it again, just not from amazon fulfillment!
UPDATE: I haven't worn the watch in over a year because the crown used to set the time has popped off. Spent no small amount of time trying to find a replacement, but I can't find good measurements for it. Would have to have access to an assortment and go by trial and error.... I guess it still deserves 3 stars?
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Reviewed in the United States on February 4, 2017
★★★★★ 5
Takes a Licking and Keeps on Ticking
Color: Green/Black
I love this watch despite the fact that it is really a toy. I love the look of the watch, I love how lite the weight of the watch is on my wrist, and it really does keep good time if you manage the solar charge properly. Other than looking cool on your wrist, this watch has absolutely no functions other than time keeping. The black plastic bezel is molded into the case and does not turn, so don't plan on using that. The watch has no light, the dial numbers are non-luminous and the hands are very limited in terms of luminosity. No buttons. All you can do is adjust the time and date by pulling out what used to be a winding stem in the good old days.
The small tag on the strap with Geographic coordinates shown on it indicate the location of the old Timex manufacturing facility (SW of Waterbury, CT).
I have a nice ledge at my bedroom window and it gets good western sun for a good part of the day regardless of the time of year. On this ledge you will find a half dozen solar powered watches (mostly Casio) properly aligned to maximize the charge they may receive each day. Note that the description for this Timex watch specifically states that a lightbulb won't charge this watch. You need direct sunlight for several hours if you want to get more than a 3-week charge into this watch.
So, I'll leave you with a couple of tips, my friends; 1.) If you are looking for a first watch to give your outdoorsy oriented Son or Daughter, then give them this one. Why? Because it is cool looking, fairly well built, and it actually works, 2.) After you receive your Timex watch, be sure to keep the display mount it is packaged with. It makes a great fixture to mount your watch on for charging and allows you to maximize the position of the solar cells on the dial so that you can optimize charging time.
Have Fun!
Jimmy
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Excellent value, flawless performance for well over a year and no signs of quitting.
Color: Green/Black
Excellent value, had this for well over a year and it still keeps perfect time, still water resistant.
No worries about having to change batteries.
Owned a fancy expensive (battery) watch once and the dept. store repair intentionally sabotaged the watch in the hopes I would purchase another from them. Yeah, good luck with that, lost my business forever.
This is the 21st century, cell phones are the new time pieces, but solar is totally reliable and Timex makes it happen.
Holds a charge for many months, although I prop it in a bright window for a few days every few months or so just to make sure the cells are always fully charged, although it's probably unnecessary, just being over cautious. I haven't actually experienced this watch ever running out of power even after months of use. Damn impressive, as it should be.
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Reviewed in the United States on October 12, 2025
★★★★★ 4
Good value for solar watch
Color: Black/Orange
Nice watch! It is plastic like but it is solar. No indiglo button only a little luminous on the hands so you don't want to wear it in tje dark and expect to check the time. 45mm case is good size for my wrist and the band works good also, Not too long not too short. Overall a good watch with no problems
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Reviewed in the United States on May 6, 2026
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